3. Lecture 1 BACTERIOLOGY

4. WELCOME TO

6. d Structure And Anatomy d Introduction1

7. –Distinguish between Eukaryotes and Prokaryotes. –Describe bacteria by their shapes and Structure also explain the function of its components. –Name some common Terms. –Explain the structural modifications (flagella) of the ce ll and their functional importance. –Distinguish between Eukaryotes and Prokaryotes. –Describe bacteria by their shapes and Structure also explain the function of its components. –Name some common Terms. –Explain the structural modifications (flagella) of the ce ll and their functional importance. By the end of the session you should be able to

8. What is Microbiology ? microorganism or microbe is an organism that is so small that it is microscopic (invisible to the naked eye ) – several classes of living beings Based on the organization of their cellular structures, all living cells can be divided into two groups: eukaryotic and prokaryotic Prokaryotes bacteria & blue green algae Eukaryotes Animals, plants, fungi, protozoans, and algae Living beings

9.  Common Terms INFECTION: the establishment of a microorganism within a host. PATHOGEN: Any microorganism that has the capacity to cause disease. VIRULENCE: quantitative measure of the likelihood of causing disease. OPORTUNISTICS: Principle pathogens regularly cause disease Opportunistic pathogens require a defect in the immune defe nce

11. Prokaryote vs Eukaryote

13. Size of Bacteria Unit of measurement i n bacteriology is the mic ron (micrometre, µm) Bacteria of medical importance –0.2 – 1.5 µ m in diameter –3 – 5 µm in length Size of Bacteria Unit of measurement i n bacteriology is the mic ron (micrometre, µm) Bacteria of medical importance –0.2 – 1.5 µ m in diameter –3 – 5 µm in length

16. Outer layer – two components: 1. Rigid cell wall 2. Cytoplasmic (Cell/ Plasma) membrane – present beneath cell w all Cytoplasm – cytoplasmic inclusions, ribosomes, mesosomes, g enetic material Additional structures –capsule, flagella, fimbriae (pili), spores Outer layer – two components: 1. Rigid cell wall 2. Cytoplasmic (Cell/ Plasma) membrane – present beneath cell w all Cytoplasm – cytoplasmic inclusions, ribosomes, mesosomes, g enetic material Additional structures –capsule, flagella, fimbriae (pili), spores Anatomy of A Bacterial Cell

17. who examined the first microorganisms? Who is bigger in size? (prokaryotes or Eukaryotes)? Where can we found bacteria ? What is the Function of cell wall ? Bacterial shapes are variable describe ? Bacterial Cell structure can be modified, how come ? who examined the first microorganisms? Who is bigger in size? (prokaryotes or Eukaryotes)? Where can we found bacteria ? What is the Function of cell wall ? Bacterial shapes are variable describe ? Bacterial Cell structure can be modified, how come ?

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20. Robert Koch Louis Pasteur Antioni Van click

35. The establishment of a microorganism within a host. Any microorganism that has the capacity to cause disease. Quantitative measure of the likelihood of causing diseas. The pathogen that require a defect in the immune defence.

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